Glass Fire (2020)
Napa & Sonoma Counties, California · Sep 27, 2020 – Oct 20, 2020
Acres burned
67,484
Lives lost
0
Structures destroyed
1,520
Year
2020
What happened
The Glass Fire tore through Napa and Sonoma wine country in 2020, destroying wineries, resorts, and more than 1,500 structures during California’s record fire season.
Cause
Undetermined
Location
Napa & Sonoma Counties, California
Key facts
- ▪Devastated Napa/Sonoma wine country
- ▪Destroyed wineries and resorts
- ▪1,500+ structures lost
- ▪Part of the record 2020 season
Replay the Glass Fire in the spread simulator
This centers the wildfire-spread simulator on the Glass Fire’s documented ignition point and replays its conditions on 2020-09-27 — the day’s strongest wind, temperature, and humidity from the open-meteo historical archive (which set the fire-day fuel moisture) — run through the same Rothermel surface-fire model used across FireRisk. Press ▶ Simulate to watch how fire tends to move under those conditions.
⚠️ Educational reconstruction — not the real fire perimeter
This is a simplified model of how fire spreads under the 2020 conditions, not the Glass Fire’s actual burned area, official progression, or a prediction of any current fire. It cannot account for real fuels, suppression, spotting, or how conditions changed hour to hour. For real-time fire information always follow Watch Duty, official agencies, and local authorities — and call 911 in an emergency.
Loading the 2020 fire-day conditions…
Reminder: an educational reconstruction of fire spread under the 2020 conditions — not the Glass Fire’s actual perimeter, an official record, or a forecast. Modeled spread, direction, and timing are illustrative only. Never rely on it for any safety decision.
Could your home survive a fire like the Glass Fire?
Check your address for a 0–100 wildfire risk score, every fire recorded nearby, and the hardening steps that change the outcome.
Related major fires
Glass Fire FAQ
When was the Glass Fire and where did it burn?
The Glass Fire started Sep 27, 2020 in Napa & Sonoma Counties, California, and was contained Oct 20, 2020.
How many acres did the Glass Fire burn?
The Glass Fire burned approximately 67,484 acres.
How many people died in the Glass Fire?
Approximately 0 people died in the Glass Fire.
What caused the Glass Fire?
Undetermined.
Figures are approximate and compiled from official agency reporting; totals for recent fires may still be revised. FireRisk.ai is an independent wildfire-risk service.